Buffing-machine.



A. E. JERRAM & J. GOULDBOURN. BUFFING MACHINE.

APPLICATION mum 91:0. 11, 1009.

1,1 19,828, Patented Dec. 8, 1914.

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BUFFING MACHINE.

APPLICATION mum DEO.11, 1909.

1, 1 1 9,828. Patented Dec. 8,1914.

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A. E. JERRAM & J. GOULDBOURN.

BUFFING MACHINE.

APPLIOATION rum; DEC. 11, 1909.

Patented Dec. 8, 1914.

4 BHBETS-SHEET 3.

illllli A. E. JERRAM & J. GOULDBOURN.

BUFFING MACHINE.

AIPLIOATION FILED DBO.11,1909

Patented Dec. 8, 1914.

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PFIENS c0. PHOTO LITHLL. WAbHlNliIUN 11:

UNITED s'ra'rns PATENT onmjon.

ARTHUR ERNEST JERRAM ANI) JOSEPH GOULDBOURN, OF LEICESTER, ENGLAND,

ASSIGNORS TO UNITED SHOE MACHINERY COMPANY, OF PATERSON, NEW JER- SEY, A CORPORATION OF .NEW JERSEY.

BUFFING-MACHI NE.

Application filed December 11, 1909.

To all whom it may concern Be it known that we, ARTHUR E. J ERRAM and Josnrlr Gounnisoonx, subjects of the King of England, residing at Leicester, in the county of Leicester, England, have invented certain Improvements in Bailing: Machines, of which the following description, in connection with the accon'ipanying drawings, is a specification, like reference characters on the drawings indicating like parts in the several figures.

This invention relates to grinding and polishing machines and will be described in connection with a machine for bailing the bottoms of boots and shoes.

It has been found that simultaneous rotation and reciprocation of the buffing roll tends to improve the surface produced on the work andto prolong the life of the abrasive covering of the roll. The rolls, however, are commonly mounted upon comparatively heavy shafts, and in machines as hitherto constructed the vibration caused. by such reciprocation; has proved objectionable. Accordingly one feature of the present invention comprises improved means for reciprocating the rotating shaft of such a machine. This and other features of the invention including certain details of construetionand. combinations of parts will be described in connection with an illustrative machine and pointed out in the appended claims.

Referring now to the accompanying drawings:-l*igure 1 is a front elevation of a machine embodying this invention; Fig. 2 is a side elevation; Fig. 3 is a front elevation partly in section of the reciprocating mechanism and the brakes and pulleys for the roll shafts; Fig. 4 is a side elevation partly in section of the reciprocating mech anism; and Fig. 5 is a detail plan, also partly in section, of the device for actuating the oscillating levers.

Projecting from the frame of the machine is a bracket 1 carrying a casing 2 which contains the mechanism for reciprocating the roll shafts 3 and 5 which are located one on each side of the easing the rolls on the shafts being shown at 6, and 106. it should be understood, however, that the number and character of said rolls are immaterial. The shafts 3 and 5 are shown as mounted in line in bearings 4, the mount- Specification of Letters latent.

Patented Dec. 8, 1914.

Serial No. 532,628.

ingbeing such as to permit longitudinal reciprocation.

Inasmuch as the means for reciprocating the roll shafts are identical only one set will be described. Fast to the shaft 5 is a palley 9 bywhich said shaft may be rotated. A. groove near the inner end of said shaft is engaged by a yoke 13 said shaft and yoke being thus capable of relative rotation but held from relative longitudinal movement. This yoke has projecting trunnions 16 upon which is pivoted a lever 19, said lever be ing of the floating type and being pivoted at 20 to a link 27 and at 22 to a movable member or slider 23. The link 27 has formed at its end a strap which encircles an eccentric 29 fast on a shaft 33. It is clear that with this construction and arrangement if the pivot 22 be heldstationary while the eccentric 29 is actuated said pivot will serve as a fulcrum, and the shaft 5 will be reciprocated. If, on the other hand, the pivot 22 is permitted to move the pivot 16 will tend to remain stationary since the shaft 5 is much heavier than the slider 23 and since, as will be explained, means are provided for holding the shaft 5 stationary under such conditions. In order to control the movement of the slider 23 a controlling member 37 is mounted in a d0ve-tailed groove in the side of the casing 2, said member being provided with an aperture 41 adapted when placed opposite the end of the slider 23 to permit said slider to reeiproi is held from movement and the brake T1 is released so that the shaft 5 may be reciproeated; while by pulling down on the actuating rod 45 which is pivoted to the member 37 the aperture 41 may be brought opposite the end of the slider 23 and at the same time the brake may be applied. The correspondingparts in the left hand portion of the figure are shown in this latter position. In order to compensate for wear and to insure that the member 23 may be held firmly in place when desired a set screw 47 is threaded through the casing and is provided with a lock nut as shown.

The mechanism for. reciprocating the shaft 3 is identical with that for reciprocati ing the shaft 5 except that it is oppositely arranged. The yoke 11 carries trunnions 15; the lever 17 is pivoted on these trunnions and also at 18 to the link 25 and at 24 to the slider 21, while the eccentric 81 which actuates the link 25 is fast to the shaft 33 and is arranged to move said link 25 in a direction opposite to that in which the link 27 is moved by the eccentric 29. A sliding controlling member 35 similar to the member 37 carries a brake 73, and is connected with an operating rod 43. A set screw similar to the set screw it but not shown is provided to cooperate with the slider 21.. In order to insure that the shafts 3 and 5 shall not reciprocate when the sliders 21 and 23 are released springs 4:9 connect the trunnions 15 and 16. The pulleys 7 and 9 are operated by similar devices one of which will now be described. Referring to Figs. 1 and 2 the power shaft 38 carries a driving pulley 36, and around this driving pulley and the pulley 9 extends a loose belt 51. In order that this belt may be tightened when desired a bell crank controlling lever pivoted to the frame at 50 has mounted upon its arm a tightener pulley 53 while the arm 56 is formed with a handle 57. It is de sirable that the reciprocating mechanism should be thrown into operation approximately simultaneously with the rotating mechanism, and inorder to accomplish this the rod 4:5 which operates the controlling member 37 and the brake 71 is connected with the arm 56 of the bell crank lever. Upon said lever is a projecting boss 63 through which the rod 45 passes while fast to said rod are two stops 65 and 67. Encircling the rod 45 and resting loosely upon the stop 67 is a coiled spring through which the brake 71 is yieldingly applied when the handle 57 is depressed, as shown in dotted lines, to render the actuating mechanism for the shaft inoperative. A detent 59 with a suitable manipulating lever is provided on the arm 56 and engages a notched plate 61 fixed on the frame and so holds the bell crank controlling lever in adjusted position.

The mechanism for rendering operative the rotating and reciprocating mechanisms for the shaft 3, as has been stated, is similar to that described above and comprises a bell crank lever provided with a handle 157 and with a tightener pulley 153 to tighten the belt 151 said lever having a sliding connection with the rod 4-3 and being encircled by the spring 169. The shaft 33 which drives the reciprocating mechanism carries at its end a pulley which is driven from the shaft 38 by a belt 3%. The reciprocation of the shafts is of small extent and does not interfere with the operation of the belts 51 and 151. In order to remove the dust caused by the buffing operation hoods 77 and 177 partially inclose the bufling rolls while pipes 7 9 and 83 lead from said hoods to a suction device 81. The reciprocating mechanism is inclosed in the oil retaining casing 2, and in order to oil the parts a chain 75 is provided for lifting oil on to the shaft 33. The oil then passes through a spiral (not shown) cut in the journal to a suitable distributer which delivers it to the moving parts.

The present machine is designed to accommodate two operators. In operation and with the parts in the position shown in full lines in Fig. 2 one operator may at any time depress the handle 57' thereby loosening the belt 51. At the same time the boss 63 contacts with the spring 69 and lowers the member 37 until the recess 41 is opposite the end of the slider 23, the brake 71 fast to said member 37 being thus yieldingly applied to the shaft 5. The other operator may likewise tighten or loosen the belt about in connection with a particular machine it should be understood that nothing herein contained is to be construed as limiting the invention in the scope of its application to the particular machine shown and described.

The invention having thus been described, what is claimed and desired to be secured by Letters Patent is 1. A machine of the class described having, in combination, a plurality of buffing rolls, shafts upon which said rolls are mounted, means for rotating said shafts, levers connected with said shafts to reciprocate them, means for actuating said levers, and means for selectively rendering said actuation effective to reciprocate either of said shafts or ineffective to do so.

2. A machine of the class described having, in combination, a shaft, a balling member mounted thereon, means for rotating said shaft, means for reciprocating said shaft, said last named means comprising a floating lever having an axis which is stationary during the reciprocation of said shaft, and means for holding said shaft stationary when said axis of said lever is permitted to move.

3. A machine of the class described having, in combination, a plurality of shafts, buffing members mounted thereon, a yielding member connecting said shafts and means for rotating and reciprocating said shafts.

4. A machine of the class described having, in combination, a pair of roll shafts, In testimony whereof we have signed our means for rotatlng sald shafts, and means names to thxs speclficatlon 1n the presence of 10 for reclprocatmg sand shafts slmultuneously two subscrlblng \vltnesses.

in opposite directions, said means compris- ARTHUR ERNEST JERRAM. ing two levers each capable of swinging JOSEPH GOULDBOURN. about either of two axes, means for actuat- Witnesses:

ingsaid levers, and means for holding one ELEANOR PYWELL,

of said axes stationary. KATHERINE Pnx'ron.

Copies of this patent may be obtained for five cents each, by addressing the "Commissioner of latents,

Washington, I). G. 

